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WO1999020567A1 - Appareil permettant de produire electriquement de l'eau desionisee - Google Patents

Appareil permettant de produire electriquement de l'eau desionisee Download PDF

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Publication number
WO1999020567A1
WO1999020567A1 PCT/JP1998/004763 JP9804763W WO9920567A1 WO 1999020567 A1 WO1999020567 A1 WO 1999020567A1 JP 9804763 W JP9804763 W JP 9804763W WO 9920567 A1 WO9920567 A1 WO 9920567A1
Authority
WO
WIPO (PCT)
Prior art keywords
exchange membrane
cation exchange
deionized water
anion exchange
contact
Prior art date
Application number
PCT/JP1998/004763
Other languages
English (en)
Japanese (ja)
Inventor
Makio Tamura
Original Assignee
Organo Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Organo Corporation filed Critical Organo Corporation
Priority to AU96451/98A priority Critical patent/AU9645198A/en
Priority to CA002275471A priority patent/CA2275471C/fr
Priority to US09/331,256 priority patent/US6436264B1/en
Publication of WO1999020567A1 publication Critical patent/WO1999020567A1/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4693Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • C02F1/4695Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44Ion-selective electrodialysis
    • B01D61/46Apparatus therefor
    • B01D61/463Apparatus therefor comprising the membrane sequence AC or CA, where C is a cation exchange membrane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44Ion-selective electrodialysis
    • B01D61/46Apparatus therefor
    • B01D61/48Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44Ion-selective electrodialysis
    • B01D61/46Apparatus therefor
    • B01D61/50Stacks of the plate-and-frame type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44Ion-selective electrodialysis
    • B01D61/52Accessories; Auxiliary operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/42Treatment of water, waste water, or sewage by ion-exchange
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/4604Treatment of water, waste water, or sewage by electrochemical methods for desalination of seawater or brackish water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/46Apparatus for electrochemical processes
    • C02F2201/461Electrolysis apparatus
    • C02F2201/46105Details relating to the electrolytic devices
    • C02F2201/46115Electrolytic cell with membranes or diaphragms
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination

Definitions

  • the present invention relates to an electric deionized water producing apparatus used in various industries such as a semiconductor manufacturing industry, a pharmaceutical industry, a food industry, and the like, or a power plant, a research laboratory, and the like using deionized water.
  • a cation exchange membrane and an anion exchange membrane are basically arranged alternately with a spacer interposed therebetween, and a desalination chamber and a concentration chamber are formed by the spacer.
  • the liquid to be treated is desalted and concentrated by applying a direct current to the anion exchange membrane and the cation exchange membrane are not in contact with each other.
  • an electric deionized water production apparatus that has been put into practical use basically has a gap formed between a cation exchange membrane and an anion exchange membrane as an ion exchanger, for example, an anion exchange resin layer and a cation exchange layer.
  • a lamination or mixed ion-exchange resin layer of an exchange resin is filled to form a desalination chamber, and water to be treated is passed through the ion-exchange resin layer, and a direct current is applied through the both ion-exchange membranes to form a desalination chamber.
  • Deionized water is produced while electrically removing ions in the water to be treated from the concentrated water flowing outside the ion exchange membrane.
  • the anion exchange membrane and the cation exchange membrane are in direct contact with each other. Absent.
  • FIG. 5 shows a schematic cross-sectional view of the conventional typical electric deionized water producing apparatus.
  • the cation exchange membrane 101 and the anion exchange membrane 102 are arranged alternately at a distance from each other, and are placed in the space formed by the cation exchange membrane 101 and the anion exchange membrane 102. Every other one is filled with a mixed ion exchange resin 103 of a cation exchange resin and an anion exchange resin to form a desalination chamber 104.
  • Concentrated water flows through the portion not filled with the mixed ion exchange resin 103 formed by the anion exchange membrane 102 and the cation exchange membrane 101 located next to each of the desalting chambers 104 Enrichment room for storage.
  • the cation exchange membrane 101 and the anion exchange membrane 102 A deionized module 106 is formed with the mixed ion-exchange resin 103 (omitted in FIG. 6) filled therein.
  • a cation exchange membrane 101 is sealed on one side of the frame body 107 whose inside is hollowed out, and a mixed ion exchange resin 103 is filled in the hollowed out part of the frame body 107.
  • the anion exchange membrane 102 is sealed to the other part of the frame 107.
  • the ion-exchange membrane 102 is relatively soft, and when the mixed ion-exchange resin 103 is filled inside the frame 107 and both surfaces are sealed with the ion-exchange membrane, In order to prevent the membrane from curving and the packed layer of the mixed ion-exchange resin 103 from becoming uneven, it is common to install a plurality of ribs 108 vertically in the space of the frame 107. is there.
  • an inlet for treated water is provided above the frame 107, and an outlet for treated water is provided below the frame.
  • FIG. 5 shows a state in which a plurality of such deionization modules 106 are arranged side by side with spacers omitted in the figure between them, and the deionization modules 106 arranged side by side are shown in FIG.
  • a cathode 109 is provided on one end of the substrate 6, and an anode 110 is provided on the other end.
  • the space between the deionization modules 106 arranged side by side with the above-mentioned space is the enrichment chamber 105, and both sides of the enrichment chambers 105 at both ends are provided as necessary.
  • a partition membrane such as a cation exchange membrane, anion exchange membrane, or a simple non-ion-exchange membrane is provided, and both electrodes 109, 110 separated by the partition membrane 111 contact.
  • the portions to be formed are a cathode chamber 112 and an anode chamber 113, respectively.
  • deionized water is produced by such an electric deionized water producing apparatus, the following operation is performed. That is, a DC voltage is applied between the cathode 109 and the anode 110, the water to be treated flows in from the water inlet A, the concentrated water flows in from the concentrated water inlet B, and the electrode water inlet. Electrode water flows from C and D respectively. The water to be treated that has flowed in from the treated water inlet A flows down each desalting chamber 104 as indicated by the solid line arrow, and impurity ions are removed when passing through the packed bed of the mixed ion exchange resin 103. Deionized water is obtained from deionized water outlet a.
  • the concentrated water flowing in from the concentrated water inlet B flows down each enrichment chamber 105 as indicated by the dotted arrow, receives impurity ions moving through both ion exchange membranes, and concentrates the impurity ions. From the concentrated water outlet b as concentrated water, and the electrode water inlets C and D From the electrode water outlets c and d.
  • impurity ions in the water to be treated are electrically removed and concentrated in the concentrated water, so that deionized water can be continuously obtained without regenerating the charged ion exchange resin with a chemical solution at all. be able to.
  • Such a conventional electric deionized water producing apparatus is usually used by installing a reverse osmosis membrane apparatus and a water softening apparatus in a preceding stage, and supplies deionized water used in various industries very effectively.
  • the deionization module that forms the deionization chamber uses a frame with multiple ribs installed vertically in the space to ensure the filling and uniform filling of the ion exchanger to be filled, which limits the shape of the device. There were also problems such as being done.
  • an object of the present invention is to provide an electric deionization water producing apparatus which has a simple structure and is easy to manufacture while maintaining the conventional deionization efficiency, and has a high degree of freedom in the shape of the apparatus.
  • the present inventor has returned to the principle of deionization in the electric deionized water producing apparatus and made various studies, and as a result, obtained the following knowledge.
  • the ion exchanger that is, the ion exchange resin
  • the ion exchange membrane moves the ions adsorbed by the ion exchange resin to the concentration chamber, Since all ions in the concentration chamber are used for the purpose of not moving them to the desalination chamber, both the ion exchanger and the ion exchange membrane have different purposes, but the materials must be essentially the same.
  • the desalination chamber is configured to hold the flow path through which the water to be treated flows and to contact the force cation exchange membrane with the anion exchange membrane, the conventional electric deionization can be achieved.
  • the inventors have found that a device having the same deionization efficiency as that of the on-water production device, a simple structure and easy production, and a device having a high degree of freedom in device shape can be obtained, and the present invention has been completed.
  • the present invention provides an electric deionized water production apparatus in which a cation exchange membrane and an anion exchange membrane are alternately arranged between an anode and a cathode, and a desalination chamber and a concentration chamber are alternately formed between both membranes.
  • the desalination chamber is formed by contacting the cation exchange membrane with the anion exchange membrane while maintaining a flow path through which water to be treated flows from one side of the desalination chamber to the other. It is intended to provide a deionized water production system.
  • FIG. 1 is a schematic cross-sectional view showing a part of a contact state between an anion exchange membrane and a cation exchange membrane in the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a part of another contact state of the anion exchange membrane and the cation exchange membrane in the present invention.
  • FIG. 3 shows an assembly diagram of a deionization module used in the electric deionized water producing apparatus of the present invention.
  • FIG. 4 shows a schematic cross-sectional view of the electric deionized water producing apparatus according to the embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view of a conventional electric deionized water producing apparatus.
  • FIG. 6 shows an assembly diagram of a deionization module used in a conventional electric deionized water production device.
  • FIG. 7 is a schematic diagram showing an example using a spiral type deionization module in the present invention. ⁇
  • FIG. 8 is a schematic sectional view showing another example of a part of the contact state between the anion exchange membrane and the cation exchange membrane in the present invention.
  • FIG. 9 is a schematic sectional view showing still another example of a part of the contact state between the anion exchange membrane and the cation exchange membrane in the present invention.
  • the desalination chamber of the electric deionized water production apparatus is configured such that the cation exchange membrane and the anion exchange membrane are brought into contact with each other by holding a flow path through which the water to be treated flows from one of the desalination chambers to the other. It is not particularly limited as long as it is formed, and is formed without filling the ion exchanger.
  • a cation exchange membrane or an anion holding the flow path of the water to be treated examples include, for example, an ion-exchange membrane in which the vicinity of the surface is processed into a porous structure, and ions that form countless fibrous protrusions on the surface.
  • An exchange membrane, an ion exchange membrane having a nonwoven fabric surface, an ion exchange membrane forming a large number of protrusions, and the like are included.
  • These specific surface structures may be formed on the surface of both the cation exchange membrane and the anion exchange membrane on the desalination chamber side, or may be formed on the surface of one of the cation exchange membrane and the anion exchange membrane on the desalination chamber side. It may be formed on the surface.
  • the surface on the concentration side of the cation exchange membrane or the anion exchange membrane may or may not have the specific structure or the protrusion.
  • the shape of the projections is not particularly limited, and may be, for example, a substantially hemispherical, hemispherical, or conical projection; Shape, a conical shape, a linear shape, a spiral shape, an irregularly shaped projecting object, and the like.
  • the height of the projection is preferably in the range of about l to 3 mm.
  • the protrusion is preferably formed at 9 to 25 / cm 2.
  • the groove width is 1.0 to 1.5 times the cross-sectional width of the protrusion. It is preferable to be within the range.
  • the method of forming the surface of the porous structure, the surface of a nonwoven fabric, and the surface having countless fibrous projections is not particularly limited, and the porous structure or the projections or the like may be formed on the surface of a conventionally used ion exchange membrane.
  • a laminating method in which the ion-exchange membrane that forms the film is fixed with an adhesive or the like, and in the case of heat molding using a thermoplastic polymer, an integral forming method in which a porous structure or protrusion is formed during molding is exemplified.
  • the method for forming the same is not particularly limited.
  • a granular ion exchanger is mixed into the membrane, and There are a method of forming a film by projecting the surface of the ion exchange membrane using the shape of the ion exchanger, and a method of forming a film once by this method and then shaving off portions other than the ion exchanger.
  • a method of forming protrusions using a pre-formed surface of a resin resin or vinyl chloride resin net used for the support of the film a film formation by bulk polymerization
  • a method of forming irregularities when cutting out from a lump in the case of a heat molding method or paste method using a thermoplastic polymer, a method of forming irregularities during molding, and a method of shaving a part after forming an ion exchange membrane And so on.
  • the form of contact between the cation exchange membrane and the anion exchange membrane is not particularly limited.
  • the surfaces of the cation exchange membrane and the anion exchange membrane having the porous structure, the projections or the projections formed thereon are simply contacted with each other. You only need to make contact. As a result, voids are formed at the contact interface between the cation exchange membrane and the anion exchange membrane and near the surface, and the flow path through which the water to be treated flows is maintained.
  • the contact form is a flow path of the water to be treated in the desalting chamber formed by the contact between the cation exchange membrane and the ion-exchange membrane. It may be appropriately selected from the viewpoints of securing voids, deionization efficiency, and the like.
  • the protrusions and the grooves of the other film be in contact with each other. For example, if the shape of the protrusion is a hemisphere, as shown in FIG.
  • the protrusion 9 of the cation exchange membrane 11 is in the groove 7 of the anion exchange membrane 12 and the protrusion of the anion exchange membrane 12
  • the portion 8 may be brought into contact with the groove 6 of the cation exchange membrane 11 so as to face each other.
  • the contact between the tops of the projections 8 and 9 and the bottoms of the grooves 6 and 7 may be partial, but it is preferable that substantially all the tops of the projections contact the bottoms of the grooves. .
  • the projection 9 of the cation exchange membrane 11 may be brought into contact with the anion exchange membrane 12 as shown in FIG.
  • the porosity of the desalting chamber formed by contact between the cation exchange membrane and the anion exchange membrane is not particularly limited. In the case of an exchange membrane, it is preferably about 3 to 50% of the volume occupied by both ion exchange membranes. In the case of the ion exchange membrane having a large number of protrusions, the porosity of the desalting chamber is such that the cation exchange membrane 11 and the anion exchange membrane in FIGS. It means the ratio of the gap (blank portion) formed by 12 and, specifically, is preferably in the range of 30 to 80%.
  • the deionization module that forms the desalting chamber is an ion exchange module with a cation exchange membrane 11 having a large number of projections 9 formed on the surface on the side of the desalting chamber. And a membrane 12 (the surface projections of the anion exchange membrane 12 are not visible in the figure). Also, the deionization module may take various forms, for example, a spiral form.
  • the desalination chamber of the electric deionized water production apparatus of the present invention is formed by bringing a cation exchange membrane having a specific structure into contact with an anion exchange membrane, and the water in the desalination chamber is filled with water to be treated.
  • FIG. 4 is a schematic cross-sectional view of the electric deionized water production apparatus according to the embodiment of the present invention.
  • a deionization module formed by matingly contacting a cation exchange membrane 11 having a large number of substantially hemispherical projections and an anion exchange membrane 12 having a large number of substantially hemispherical projections.
  • the gaps formed by the cation exchange membrane 11 and the anion exchange membrane 12 are used as a desalting chamber 14.
  • a portion of the anion exchange membrane 12 and the cation exchange membrane 11 which is located adjacent to each of the desalting chambers 14 and does not have a projection is a concentration chamber 15 for flowing concentrated water.
  • Fig. 4 shows a state in which a plurality of deionization modules 16 are arranged side by side with a space therebetween (not shown), and a cathode 1 is provided at one end of the side-by-side deionization modules 16. 9 and the anode 20 at the other end.
  • the position sandwiching the spacer described above is the enrichment chamber 15, and a cation exchange membrane, anion exchange membrane, or a non-ion-exchange membrane is provided on both outer sides of the enrichment chambers 15 at both ends as necessary.
  • a partition membrane 21 such as a diaphragm is provided, and the portions where the two electrodes 19 and 20 are separated by the partition membrane 21 are referred to as a cathode chamber 22 and an anode chamber 23, respectively.
  • Deionized water is obtained from deionized water outlet a.
  • electrolysis of water occurs at the portion where the cation exchange membrane and the anion exchange membrane are in direct contact, and contributes to the regeneration of the ion exchange membrane that has adsorbed impurity ions by ion exchange.
  • Inflow from concentrated water inlet B The concentrated water flows down each concentration chamber 15 as indicated by the dotted arrow, receives impurity ions moving through both ion exchange membranes, and flows out of the concentrated water outlet b as concentrated water in which the impurity ions are concentrated.
  • the electrode water flowing from the electrode water inlets C and D is discharged from the electrode water outlets c and d.
  • the deionized water can be continuously obtained at the same deionization rate as in the conventional electric deionized water producing apparatus.
  • the electric deionized water producing apparatus 10 of the present embodiment has a simple structure and can be produced extremely easily.
  • the deionization module 16 is compact, the size of the apparatus can be reduced. Further, the ion exchanger and the filling operation thereof can be omitted.
  • a structure is simple and can manufacture very easily. Also, since the deionization module is compact, the equipment can be downsized. Further, the ion exchanger and the filling operation thereof can be omitted.
  • the deionization module 16 is formed into a spiral form, which is loaded into a cylindrical pressure-resistant container 40, and the pressure-resistant container side and the central side of the spiral are provided with electrodes 42, 4 If it is set to 4, an electric deionized water production device with improved pressure resistance performance can be obtained, and the degree of freedom in form is significantly increased as compared with the conventional electric deionized water production device.
  • FIG. 8 shows an example in which a cation exchange membrane porous structure 51 is formed on the surface of the cation exchange membrane 11. Further, on the surface of the anion exchange membrane 12, an anion exchange membrane porous structure 52 is formed.
  • the cation exchange membrane porous structure 51 and the anion exchange membrane porous structure 52 are porous and constitute a contact portion between the two exchange membranes 11 and 12, and are connected to a flow passage through which the water to be treated flows. Has become.
  • FIG. 9 shows an example in which the cation exchange membrane porous structure 51 is formed on the surface of the cation exchange membrane 11.
  • the porous cation exchange membrane 51 is in direct contact with the anion exchange membrane 12, and this is the channel through which the water to be treated flows.
  • the electric deionized water producing apparatus is used in various industries such as a semiconductor manufacturing industry, a pharmaceutical industry, a food industry, and the like using deionized water, a power plant, a research laboratory, and the like.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

Des membranes (11) échangeuses de cations et des membranes (12) échangeuses d'anions sont disposées de manière alternée entre une anode (20) et une cathode (19). Des chambres (14) de désalage et des chambres (15) de condensation sont placées de manière alternée entre les membranes échangeuses (11 et 12). Les chambres (14) de désalage comportent des passages dans lesquels s'écoule du liquide et qui servent à mettre en contact les membranes (11) échangeuses de cations avec les membranes (12) échangeuses d'anions. L'efficacité de désionisation est équivalente à celle d'un appareil classique, la structure est simple, la fabrication est facile et le degré de liberté existant pour concevoir la forme de l'appareil est élevé.
PCT/JP1998/004763 1997-10-21 1998-10-21 Appareil permettant de produire electriquement de l'eau desionisee WO1999020567A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU96451/98A AU9645198A (en) 1997-10-21 1998-10-21 Apparatus for electrically producing deionized water
CA002275471A CA2275471C (fr) 1997-10-21 1998-10-21 Appareil producteur d'eau a desionisation en continu
US09/331,256 US6436264B1 (en) 1997-10-21 1998-10-21 Apparatus for electrically producing deionized water

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP9/306511 1997-10-21
JP30651197 1997-10-21
JP31594497 1997-10-31
JP9/315944 1997-10-31

Publications (1)

Publication Number Publication Date
WO1999020567A1 true WO1999020567A1 (fr) 1999-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/004763 WO1999020567A1 (fr) 1997-10-21 1998-10-21 Appareil permettant de produire electriquement de l'eau desionisee

Country Status (4)

Country Link
US (1) US6436264B1 (fr)
AU (1) AU9645198A (fr)
CA (1) CA2275471C (fr)
WO (1) WO1999020567A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1364709A3 (fr) * 2002-05-15 2004-01-14 Organo Corporation Dispositif de production d'eau désionisée par électrodésionisation
EP1540039A4 (fr) * 2002-09-12 2007-01-03 Ionics Appareil et procede d'electrodesionisation d'un milieu peu dense

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US6190528B1 (en) 1998-03-19 2001-02-20 Xiang Li Helical electrodeionization apparatus
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US7029563B2 (en) * 2002-07-30 2006-04-18 Zhejiang Omex Environmental Engineering Ltd. EDI device with composite electrode
US7097752B2 (en) * 2002-07-30 2006-08-29 Zhejiang Omex Environmental Engineering, Ltd. EDI device with resin seepage-proof inserts
US7097753B2 (en) * 2002-07-30 2006-08-29 Zhejiang Omex Environmental Engineering Ltd. Dilute support frame for an EDI device
KR101161884B1 (ko) * 2003-10-20 2012-07-03 지이 이오닉스 인코포레이티드 나선형 전기 탈이온화 장치 및 그의 구성요소
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US9695070B2 (en) 2011-10-27 2017-07-04 Pentair Residential Filtration, Llc Regeneration of a capacitive deionization system
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RU2712599C1 (ru) * 2019-07-09 2020-01-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тамбовский государственный технический университет" (ФГБОУ ВО "ТГТУ") Электробаромембранный аппарат комбинированного типа
CN116675376B (zh) * 2023-06-15 2024-03-12 艾培克环保科技(上海)有限公司 一种丙烯酸丁酯废水的处理设备

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EP1540039A4 (fr) * 2002-09-12 2007-01-03 Ionics Appareil et procede d'electrodesionisation d'un milieu peu dense

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CA2275471A1 (fr) 1999-04-29
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AU9645198A (en) 1999-05-10

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